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Periodic Table in One Shot (NCERT) Video Lecture | Chemistry Class 11 - NEET

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FAQs on Periodic Table in One Shot (NCERT) Video Lecture - Chemistry Class 11 - NEET

1. What is the Periodic Table?
Ans. The Periodic Table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. It provides a systematic representation of the elements, allowing scientists to study and understand their characteristics and relationships.
2. How many elements are there in the Periodic Table?
Ans. Currently, there are 118 known elements in the Periodic Table. These elements range from hydrogen (atomic number 1) to oganesson (atomic number 118). However, not all of these elements are naturally occurring, and some are highly unstable and synthetic.
3. What are the periods and groups in the Periodic Table?
Ans. Periods in the Periodic Table are the horizontal rows, numbered from 1 to 7. Each period represents the energy level or shell in which the elements' valence electrons are located. Groups, on the other hand, are the vertical columns, numbered from 1 to 18. Elements within the same group share similar chemical properties due to their similar valence electron configuration.
4. How are elements arranged in the Periodic Table?
Ans. Elements in the Periodic Table are arranged in order of increasing atomic number from left to right and top to bottom. The elements are grouped based on their similar properties, which become more evident as you move across periods and down groups. This arrangement allows scientists to identify trends and patterns among the elements.
5. What information does the Periodic Table provide about elements?
Ans. The Periodic Table provides various information about elements, including their atomic symbol, atomic number, atomic mass, electron configuration, and chemical properties. It also allows scientists to predict an element's reactivity, whether it is a metal or nonmetal, and its position in terms of periods and groups. Furthermore, the table can be used to determine an element's valence electrons and its ability to form certain types of chemical bonds.
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